We are maximizing the impact of solar thermal technology
by breaking solar thermal’s cost and complexity barriers.
To do this, we have built an ecosystem of own brands and partners.
As an Impact Engineering firm we are dedicated to develop whatever is necessary to have a significant impact on climate change and poverty, globally. To this end we have developed our Lytefire solar oven, roasters and Saunas, our GoSol education program to create entrepreneurs and strong partnerships to scale.
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Our Brands

GoSol is our community and education hub to spread the Lytefire 5 Solar Ovens to high-impact settings.

Solar Fire France is commercializing the Lytefire 5 Oven and Roaster applications in the French market.

The Lytefire Sauna demonstrates the power of the sun for carbon free well-being and tourism.
Why Solar Fire
Access to clean energy is a real problem world wide
3 billion people
Need a clean source of heat every day to process food or run their business.
Today they burn charcoal, trash, LPG, biomass or rely on poor electric grids.
11 years
Remaining in order to reduce heavily carbon emissions from growth, according to the IPCC.
3 billion people
Empowered with affordable and powerful clean energy can have a very strong impact on climate change mitigation.
From our Channel
Lytefire Sauna - The Experience - Heuberge 2020
987 views, 1:29 min
Solar Sauna in the Swiss Alps - Intro
4:23 - 539 views
Scaling the Direct Solar Economy
2,497 views, 4:58 min
Free the Sun!
209,624 views, 3:16 min
Cooking in the Snow
6,089 views, 0:57 min
Latest News & Press Coverage
The Saturday Solar Baking’s in Kenya
mercredi 10 février 2021, by Eva Wissenz
Building Impact with the First Solar Bakeries in Ethiopia
mardi 2 février 2021, by Urs Riggenbach
Solar baking in Haiti with Remar
Monday 25 January 2021, by Lorin Symington
Happy New Year 2021!
Tuesday 12 January 2021, by Eva Wissenz
Video: Solar Melted Cheese Racelette - Lytefire Sauna
Friday 4 December 2020
A new solar bakery in Burkina Faso
vendredi 27 novembre 2020, by Lorin Symington
Solar Fire International

Eerik Wissenz
Co-Founder – Chair of the Board and Chief Executive Officer
Finland
eerik.wissenz@solarfire.io

Eva Wissenz
Co-Founder – Director of the Board and Chief Officer Partnerships, Solar Fire France Development, Sales & Investment, Education & Communication
Finland
eva.wissenz@solarfire.io

Urs Riggenbach
Director of the Board – Chief Operations Officer, Sauna Development, Sales & Investment, Finances & Administration, IT
Switzerland
urs.riggenbach@solarfire.io

Lorin Symington
Director of the Board – Chief Builder, Project Management, Prototyping and Field Work
Canada
lorin.symington@solarfire.io

Arnaud Crétot
Chief Technical Officer, Engineer, Professional Baker and Solar Fire France Development
France
arnaud.cretot@solarfire.io
Solar Fire Kenya Team
Solar Fire France Team
